High CPU in the Playground

[distraub]

I am getting pretty high CPU usage in this playground and can't figure out exactly why.

When I profile most of the time is spent in _renderForCamera

https://playground.babylonjs.com/#HRYQ1L#20

I was getting 40-42% cpu, but leaving it for a little while the cpu hits 100%+

Any ideas on what I can do would be apperciated.

 

[Guest]

Well I tried on two different computers but I cannot see any increase in CPU consumption. Can you try on another browser perhaps?

[distraub]

It looks like the raising CPU issue may have been a heat issue on this machine.

I am still not sure what from that playground would drive it so hard.

Do you have any optimization recommendations to curb cpu usage on that playground?

 

 

[rje]

I noticed that this line in the playground js:

fpsLabel.innerHTML = engine.getFps().toFixed() + " fps";

causes unnecessary overhead to the page rendering. Using 'textContent' should speed things up.

[distraub]

@rjeThat is part of the playground system though, not part of this particular playgrounds code.

[Guest]

The optimization phase (sceneOptimizer) could be a little bit expensive regarding CPU but besides that I do not see anything relevant

[distraub]

@DeltakoshThank you!